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Flux related question

  1. Mar 9, 2013 #1
    1. The problem statement, all variables and given/known data
    An infinite line of charge is along the entire x axis has a constant value for λ. A hemisphere is centered at the origin and has a base circle of radius a. What is the electric flux throught the hemisphere


    2. Relevant equations

    Flux = Q enclosed / ε

    3. The attempt at a solution

    Q enclosed must be λ* (2a) .. Thus, the answer should be 2λa/ε. Is this right or should we half it.. I mean would this be the same answer if the hemisphere was a full sphere. Thanks for helping!
     
  2. jcsd
  3. Mar 9, 2013 #2

    Doc Al

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    Staff: Mentor

    What's the orientation of the hemisphere? Is it just a hemisphere or is it a closed surface? (Gauss's law requires a closed surface.)
     
  4. Mar 9, 2013 #3
    It is a closed hemisphere!..
     
  5. Mar 9, 2013 #4

    Doc Al

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    Staff: Mentor

    Good. What is its orientation? Is its axis of symmetry parallel to the x-axis?
     
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